1. Orochimaru: Orochimaru's dark purple chakra color symbolizes his evil nature, seen in his encounter with Kakashi during the Chunin Exams. 

2. Madara Uchiha: Madara's light purple chakra color represents his terrifying and enigmatic strength, revealed during the Fourth Shinobi World War. 

3. Sasuke Uchiha: Sasuke's purple Susanoo chakra showcases his malevolent nature, evolving to the point of being a force beyond a Kage. 

4. Hinata Hyuga: Hinata's light blue chakra changes to purple in "The Last" after awakening her hidden powers, a seemingly superficial change considering her strength.

5. Hashirama Senju: Hashirama possesses godlike chakra, overwhelming even Tobirama. Hashirama and Madara have identical purple chakra colors, a little known fact.